“If you build it, they will come.” So goes the classic line from the movie Field of Dreams. In a hot real estate market, where home renovations add equity and drive up sale prices, “they” are the home demolition people, who love to renovate, rebuild and resell. If you’re considering that path, you’ll also have to consider the factors that impact the cost of a house demolition. What's in your walls affects what it's going to cost Whether it’s a kitchen demolition, bath demolition or entire interior gutting of your home, there are five factors that affect the cost. For starters, the age of your home plays…